A lonely and broken Time Lord sat on the floor of his ship, in a room that had lost its owner. Random everyday items were scattered about. It looked lived in. but it wasn't, not anymore. Tomorrow he would see her one last time. He would make that sun supernova, but after that…what could he say?

How do I say goodbye to what we had?
The good times that made us laugh
Outweigh the bad.

He remembered everything so clearly. Her smile was brighter than any other sun he had ever encountered. She had been the light in his dismal and broken life. A simple human girl had brought him so much joy. She'd take his hand, give him that smile, the one reserved especially for him, and he'd feel…warm.

I thought we'd get to see forever
But forever's gone away
It's so hard to say goodbye to yesterday.

'How long are you going to stay with me?'

'Forever.'

She had promised him. It hurt to think that that promise was now worthless. It was now just a hopeful intention. He couldn't class it as fact any longer. Her smile had been so truthful. She had believed what she said.

I don't know where this road
Is going to lead
All I know is where we've been
And what we've been through.

Memories kept clawing their way to the forefront of his mind, memories of her spirit and bravery. Her determination when they had first met, how she had risked her life to save him. She had been so stupid, but so utterly amazing. And she had kept doing it again and again.

'I want you safe, my Doctor'

She was his glowing goddess. She had been incredible that day. He had been awed by her. In those moments when she had held the vortex within her, she had understood him perfectly, and he had loved her for it. She was saving him in more ways than she could ever possibly have known. She had saved him everyday.

If we get to see tomorrow
I hope it's worth all the wait
It's so hard to say goodbye to yesterday.

He was terrified of tomorrow. How could he see her and not touch her? How could he bare to see the pain in her eyes and know that there was nothing he could do to make it all better again? How could his hearts not brake within his chest? He was feeling the most fragile he had ever been.

And I'll take with me the memories
To be my sunshine after the rain
It's so hard to say goodbye to yesterday.

He missed that smile of hers. The one that could make his breath catch in his throat and his pulse quicken. He wished he had told her everyday what she had meant to him. Maybe if he had told her, then one thing may have changed, and that one thing would have prevented them being at the tower on that day. They would still be together. He would tell her tomorrow…he had too, he needed to. He needed her to know.

He felt so cold. He was turning to ice and he could not stop it. She had been his only warmth and now that she was gone, he had nothing, just two hearts that pretended to beat.

And I'll take with me the memories
To be my sunshine after the rain
It's so hard to say goodbye to yesterday.

A lonely and broken Time Lord sat on the floor of his ship, in a room that had lost its owner, tears streaming silently down his face.